Hi Leon,
On 22/02/21 1:30 pm, Steen Hegelund wrote:
> Hi Leon,
>
> On Sun, 2021-02-21 at 07:59 +0200, Leon Romanovsky wrote:
>> EXTERNAL EMAIL: Do not click links or open attachments unless you
>> know the content is safe
>>
>> On Thu, Feb 18, 2021 at 05:14:49PM +0100, Steen Hegelund wrote:
>>> Provide new phy configuration interfaces for media type and speed
>>> that
>>> allows e.g. PHYs used for ethernet to be configured with this
>>> information.
>>>
>>> Signed-off-by: Lars Povlsen <lars.povl...@microchip.com>
>>> Signed-off-by: Steen Hegelund <steen.hegel...@microchip.com>
>>> Reviewed-by: Andrew Lunn <and...@lunn.ch>
>>> Reviewed-by: Alexandre Belloni <alexandre.bell...@bootlin.com>
>>> ---
>>>
>
> ...
>
>>> int phy_validate(struct phy *phy, enum phy_mode mode, int submode,
>>> union phy_configure_opts *opts);
>>> @@ -344,6 +356,20 @@ static inline int phy_set_mode_ext(struct phy
>>> *phy, enum phy_mode mode,
>>> #define phy_set_mode(phy, mode) \
>>> phy_set_mode_ext(phy, mode, 0)
>>>
>>> +static inline int phy_set_media(struct phy *phy, enum phy_media
>>> media)
>>> +{
>>> + if (!phy)
>>> + return 0;
>>
>> I'm curious, why do you check for the NULL in all newly introduced
>> functions?
>> How is it possible that calls to phy_*() supply NULL as the main
>> struct?
>>
>> Thanks
>
> I do not know the history of that, but all the functions in the
> interface that takes a phy as input and returns a status follow that
> pattern. Maybe Kishon and Vinod knows the origin?
It is to make handling optional PHYs simpler. See here for the origin :-)
http://lore.kernel.org/r/1391264157-2112-1-git-send-email-and...@lunn.ch
Thanks
Kishon
>
>>
>>> + return -ENODEV;
>>> +}
>>> +
>>> +static inline int phy_set_speed(struct phy *phy, int speed)
>>> +{
>>> + if (!phy)
>>> + return 0;
>>> + return -ENODEV;
>>> +}
>>> +
>>> static inline enum phy_mode phy_get_mode(struct phy *phy)
>>> {
>>> return PHY_MODE_INVALID;
>>> --
>>> 2.30.0
>>>
>
> Best Regards
> Steen
>
